Folding-machine



H. B. COGLEY.

FOLDING MACHINE.

APPLICATION FILED AUG. 11. 1916.

Patented Mar. 2, 1920.

4 SHEETS-SHEET 1 II i.

IN V EN TOR.

ATTORNEY.

H. B. COOLEY.

FOLDING MACHINE.

APPLICATION FILED Aus.11. 191s.

Patented Mar. 2, 1920.

4 SHEETSSHEET 2.

[N V EN TOR.

A TTORNE Y.

H. B. COOLEY.

FOLDING MACHINE.

APPLICATION FILED AUG-17,1916- Patented Mar. 2, 1920.

4 SHEETSSHEET 3 INVENTQR. 3, 3%,

TORNEY.

H. B. COOLEY.

FOLDING MACHINE.

APPLICATION FILED AUG. I? 1916.

' 1,332,288., I Patented Mar. 2, 1920.

4 SHEETS-SHEET 4.

% INVENTOR.

.- ATTORNEY.

UNITED STATES PATENT OFFICE.

HENRY B. COOLEY, OF KENSINGTON. CONNECTICUT, ASSIGIIOR TO THE AMERICAN PAPER GOODS COMPANY. OF 'llEONTCLAIR. NEW JERSEY. A CORPORATION OF NEW JERSEY.

FOLDING-MACHINE.

Application filed August 17, 1916.

T 0 all whom. it may concern:

Be it known that I, HENRY B. COOLEY, a citizen of the United States, and a resident of Kensington. in the county of Hartford and State of Connecticut, have invented a new and Improved Folding-Machine, of which the following is a specification.

My invention relates more especially -to machines for folding blanks of material into the form of receptacles, and an object of my invention. among others. is to provide a machine of this class that is particularly applicable for folding over the edge of a blank and for securing said folded over edge to the body of the blank.

One form of my improved device. in the construction and use of which the object herein set out, as well as others, may be at tained. is illustrated in the accompanying drawings, in which- Figure 1 is aview in lengthwise vertical section through a portion of a machine embodying my invention, the creasing rolls being stopped and in the position assumed when a blank is not passing therebetween.

Fig. 2 is a plan view of a part of the mechanism shown in Fig. 1. the creasing rolls being shown in the same condition.

Fig. 3 is a detail view in side elevation of a portion of the machine in which the creasingrolls are mounted, and looking in the opposite direction from the point of View of Fig. 1, the creasing rolls being in the same position as shown in Fig. 1. 1 Figs. 4. 5 and 6 are detail views, scale enlarged. illustrating the operation of the machine in folding over and pasting the edge of the blank.

Fig. 7 is a view showing the blank from which an article is to be formed or folded in my improved machine, and also showing said blank folded.

8. 9 and 10 are detail views illustratin g the operation of the mechanism for governing and controlling the operation of the, creasing-rolls. the spring arm being omitted.

My invention is shown herein as applied to a machine like that illustrated and described in a reissued patent granted to me May .th, 1916, No. 14.127 (original Patent No. 1.083.921, dated January 13th, 1914) Specification of Letters Patent.

Serial No. 115,537.

and reference is hereby made to such patents for an understanding of such parts not especially pertinent to the present invention and which may not be described in minute detail herein.

In the accompanying drawings the numeral 10 indicates side parts of the frame of my improved machine, which parts may be of any desired shape and that will have suitable bearings for the various rolls and other shafts suitably connected by gears and pinions or other driving members, and included in the construction of the machine as a whole, the larger part of which bearings will not be specifically referred to herein. A pair of feed rolls 11 are mounted in the frame at one end thereof, and are arranged to deliver blanks from which the articles are to be formed, from any suitable source of supply on to a plate 12 extending into the throat between a pair of creasing rolls 13-14 mounted in hearings in the side parts of the frame. I

In order that the following description of the operation of the machine may be readily understood, attention is called to the blank 15 shown in Fig. 7. which blank is composed of folds 16 and 17, that are folded on the dotted line. 18 to lie one against the other. One fold 16 has a protective fold 19 and the other fold 17 has at its opposite edges securing flaps or folds 20, the protective fold being creased and folded on the dotted line 2-1 to lie against the outside of the fold 16 and the flaps 20 being creased and folded on the dotted lines 22 to lie against the surfaceof the fold 16 and secure it to the fold 17. to form the body and produce the receptacle 112.

The blanks are passed between the rolls 13 and 14 with the ends having the pro-' tective flaps in advance, saidflap on each blank being acted upon by a gumming bar 23 yieldingly mounted on springs 25 in a groove 24 extending lengthwise along the peripheral surface of the roll 14, guide and holding screws 26 passing through holes in lips 27 at the ends of the bar in a manner to permit it to move inand out but to limit its outward movement in said groove. This gumming bar being located normally with Patented Mar. 2, 1920.

its edge projecting beyond the surface of the roll brushes over a gumming roll 28 projectout of a gum box 29 containing a suita e adhesive to be applied to the flaps of.

the blanks that are to be folded. The gumming bar 23 acts in connection with a supporting strip 30 mounted in the periphery of the roll 13, the rolls 13 and 14 being so formed and timed in their rotation that the bar 23 and strip 30 may uniformly pass in position to coact each with the other. The roll 14 has a flap creasing blade 31 projecting lengthwise along the roll from its outer surface and located just behind the gumming bar 23, this term behind being used with reference to the direction of rotation of the roll. .This blade coacts with a flap creasing groove 32, extending lengthwise in the perlpheral surface of the roll 13 and located just behind the supporting strip 30, to crease the blank on the line 21 for the subsequent folding of the fold 19. The rolls 13 and 14 are also provided respectively with a creasing blade 33 and a coacting crease or groove 34, to crease the blank on the line 18 for subsequent folding on that line, as shown herein this groove being located in a block set into the surface of the roll 14.

It is of importance, in the operation of the machine, that the gumming bar 23 shall not come in contact with any part of the roll 13, this to prevent objectionable smearing of the blanks. In order to avoid this obj ectlonable action the roll 13 has in its periphery a 1 releasing groove 35 extending lengthwise thereof and mechanism is provided to. stop its rotation, whenever a blank shall fail to pass between the rolls. at a time when the releasing groove 35 is opposite the roll 14. as shown in Fig. 1. in which position the roll 14 continues its rotation without contact with the roll 13. At this time the gumming bar 23 is passing within the releasing groove 35 and touches no part of the roll 13.

The mechanism for governing the relative positions of the creasing rolls embodies a releasing opening 36 in the plate 12, and under the end ofa controlling finger 37 secured to a finger supporting shaft 38 mounted in the side parts of the frame. A detent holding latch 39 is secured to the end of the shaft 38 in position to overlie and engage a lip 40 on a detent holding arm 41 secured to and projecting from a detent rock shaft 42, the latch having a hook to engage the edge of said lip. Creasing roll detents 43 are secured to and'project from the rock shaft 42, their ends being located in position to engage creasing roll stops 44 projecting from the periphery of the reduced end of the creasing roll, near its ends.

The creasing roll 13 is formed in two sections of similar construction and loosely mounted on the creasing roll shaft 45. creasing roll driving plates 46 are secured to the shaft 45 at the ends of the roll sections, and clutch pins 47 are each slidably' mounted on a spring 48 extending from a recess in one section into a recess in the opposite section. The ends of these pins are beveled or pointed, as shown in dotted lines in Fig. 2, to engage clutch recesses 49 in the fiat faces of the plates 46 so that the clutch pins will be forced backwardly and be disengaged from said recesses when an obstacle is interposedto prevent rotation of the roll sections. In the construction herein shown the stops 44 are inserted in slots 50 formed radially in the ends of the roll sections, and project beyond the periphery of the reduced ends of said roll sections. A roll 51 is mounted on the holding arm 41 in position to engage a detent operating cam 52 secured to the shaft 45. A spring 53 secured at one end to the frame of the machine and at its opposite end to a spring arm 54 secured to and projecting from the shaft 42. forces the arm 41 in a direction to cause the roll 51 to engage the cam 52.

The machine is constructed to perform an operation upon and complete the formation of a receptacle at each complete rotation of the rolls 13 and 14. Whenever the blanks are passing regularly under the linger 37, the detent will be raised to permit passage of the stop 44 thereunder at each cycle of movement of the machine, and its normal operation will not be disturbed. When, however, a blank fails to regularly pass under the finger 37, then the rotation of the sections of'the roll 13 will be stopped. the parts operating as follows:

The detent 43, stop 44, releasing groove 35 and roll 14 are so relatively positioned that the stop member engages the detent and stops rotation of the roll 13 when said groove is opposite the roll 14, so that whenever the sections of the roll 13 are stopped the gumming bar 23 may pass through the space 35 and thus prevent daubing of adhesive on the roll 13, as shown irr Fig. 8 of the drawings. The cam 52 is formed to throw the arm 41 away from the shaft 45 and in position for engagement by the latch 39 at the time between the passing of successive blanks underneath the finger 37. \Vhen the ends of the pins .47 are engaged in the recesses 49 the movement of the cam 52 and the blanks 15 are so timed that the arm 41 will be forced into position for engagement of the latch 39 at a time just before engagement of the front edges of the blanks with the finger 37. as shown in Figs.

8 and 10 of the drawings, so that should no blank pass the finger, the latch will be in position to en age the lip 40 and thus so long as the blanks fail to pass underneath the controlling finger. Immediately, however, upon the next blank passing un derneath said finger, the detents will be raised from the engagement with the stops +1 and thereafter as soon as the clutch r cesses 49 are moved opposite the clutch pins, the latter will snap into place in the recesses and thereby ause the roll sections to resume their operation.

After the blanks pass the controlling nnger they are moved under a guide finger 55 extending into a peripheral groove 56 in the roll 13 and on to a folding plate 57 lo cated on the opposite side of the roll from said controlling finger. A positioning plate 58 overlies the plate 57, there being a slight space between them. The positioning plate is of a length approximately that of the width of a blank, and in the construction herein shown has four projections, the two center projections having openings 59. This plate is attached to a bar 60 secured to a block 61 at its upper end, said block being supported on a bar 62 secured at its opposite ends to the side'parts of the frame as by means of posts 68, whichposts in the (onstruction herein shown, are integral with the bar. The bar 60 is located in a slot in the block .61 in the construction of machine illustrated herein, a. pin at the upper end of the bar holding it against movement in the slot.

A folding rock shaft 6&- is supported upon and between the side parts of the frame 1C and has folder hooks 65 secured thereto in position to engage the advance edges. of the blanks as they emerge from the rolls 13, 14. A rock arm 66 secured to and' projecting from the shaft 64 has an operating rod 67 pivota-lly secured thereto and with a forked end straddling the shaft 45, a roller 69 on this rod engaging afolder operating cam 8 also secured to the shaft 45.

The cam 68 is so formed and the parts just described are so timed in their movements with respect to each other that each blank as it emer es from the rolls 13 andli strikes with its ont edge within the hooks 65, that are, at this time, in their upper position and projecting into the openings 59 within the projection from the plate 58 so that there is no chance for the edges of the blanks to pass over the hooks and between them and the edgeof said plate.

Just after each blank strikes the hooks 65. the latter are swung downwardly from the position shown in Fig. 4 to the position shown in Fig. 5, and the positioning plate 58 preventing this edge of the blank from rising it is passed to the position and in the shape shown in dotted lines in Fig. 5 from which it is immediately passed through the feed rolls 70-71, as shown in Fig. 6 of the drawings, the movement of the blank being continuous and the. fold 19 taking place on the dotted line 21 of the blank shown in Fig. 7.

After passing the rolls 70-71 the blank is guided b a guide plate 72 on to a table ing blade 82 at its outer end, is mounted for rocking movement upon the upper edges of the side parts ofthe frame, this shaft being operated by a rod 83 having a roller 8% engaging a cam on the lower creasing roll shaft 85. the rod straddling the shaft and being held between'the cam and a collar 86. the oppositeend of the rod being pivotally attached to an arm 87 secured to and projecting from the folder shaft 81.

It will be understood that the several cams and other parts comprising this folder mechanism will be shaped and timed in their movements to properly act upon the blanks and fold them into the desired shape. the blade 82 folding the blanks on the line 18 and tucking them between the rolls 74 and by means of which they are delivered across the table '88 to a gumming roll 89 and feed roll 90. The roll 89 is made up of two members, as shown in Fig. 2 of the drawings. these members having gummers 91 that are supplied with gum in any suitable manner to be applied to the flaps 20 of the blanks as they pass between the rolls 89 and 90 and over a folding box 92. This box is of a width substantially equal to that between the dotted lines 22 of the blanks. and when the blanks are successively deposited on this table with the body fold 17 underneath and the other body fold 16 on top they are crowded by folding blades 93 into the box that is tapered substantially to the degree of the lines 22. The blades 93 are secured to and project from a rock shaft 94 that is operated in any suitable manner to actuate the blades 93 at the proper time to crowd the blanks into the box, this operation raising the flaps or folds 20 to a position substantiallr at right angles to the body fold 17. These flaps 20 are then folded over by any suitable mechanism, and as specifically shown in my patents hereinbefore referred to. to overlap the upper surface of the body fold 16 on to which surface they'are pressed and securely fastened as by means of adhesive. From this position the rolls 95-436, which have been released from the blank during the folding operation, again grasp the blank and remove it from the folding box to feed The several rolls and other parts herein- -before described are suitably geared together and driven as from a main shaft 99 having a driving pulley 100 secured thereto. These parts may be connected upin any suitable manner" and detailed description does not, therefore, appear to be necessary herein. Briefly stated it may be said that the main shaft extends through the machine and hasa gear meshing with a gear on the shaft of the roll 90, which gear meshes with a gear 101 on the shaft of the roll 89, this shaft also havingagear 102 meshing with "a train of gears for driving the rolls 95, 96,

97, 98, &c. The gear on the shaft of the roll 90 meshes with an intermediate pinion 103 that meshes with a gear 104 on the shaft of the roll 7 5, which gear meshes with a pinion 105 on the shaft of the roll 74: and also with an intermediate gear 106, the latter meshing with a gear 107 on the shaft of the roll 71. This gear 107 meshes with a pinion 108 on the shaft ofthe roll 70 and also with an intermediate pinion 109. The inion 109v meshes with a gear on the shaft 0 the creasing roll 14. the latter gear meshing with a gear '110 onthe shaft of the upper creasing roll'13. The gear on the shaft of the creasing roll l t meshes with an intermediate gear 111 that in turn is geared up to drive the pair of feed rolls .11.

The cam 52 is formed with a long surface to hold the arm 11 away from the shaft during the time, or a suitable portion of the time, that the blanks are passing underneath the fingers 37 so that there will be no pressure of the lip 10 against the-latch 39 and the latter is, therefore, free torespond to movement of the blanks 15 which are there by permitted a free and easy movement 1mder the fingers 37.

It will be noted that the folding hooks are held in their raised or normal position by a spring 113 secured at one end to the operating rod 67 and at its opposite end to the frame of the machine. The tension of thisspring is such that the force exerted b the blanks as they strike these hooks wil cause them to be moved downwardly, and the cam 68 will retain them in-their lowermost position until after the blank has been forced from their grasp. The folding hooks are pivoted on an axis located below the plane of travel of the blanks along the plate 57 with a-result thatas the advance edge of the blanksstrikes the hooks, and v llnder" the force exerted upon it by the creasing rolls, said hooks are forced do'wnw'a'iwily bv 'termine the the blank below the plane offthe plate, the blank thus causing the hook'to draw'its ad-' vance edge downwardly into this position.

The crease iii the b'lankcauses -it to break or tective edge is formed upon the blank in a preliminary step in the operation, as distinguished from the machine inwhich the,

formation of this edge takes place as one of the final steps in making the cup.

A salient feature of my improved machine is the folding of the advance end of the blank upon itself while the main portion of the blank is in motion, by stopping the advance end of the blank and forcing the ad jaoent portion of the main body thereof over sald end, after which the, stopped portion of the blank is released and the blank is then brought under the control of 'pressure means for completing the fold. This folding operation is aided by creasing the blank along a line on which it is desired to fold shall occur.

For this purpose I interpose between the blank feeding means and the pressure means a stop or obstruction, which engages with the advance end of the blank and stops it wlthout interfering with the feed of the mam portion of the blank over said end, whereby a fold is produced in the blank along the lme of saidcreas e, which crease s preferably made in theblahk while feedlng it. In the articular device herein .0 shown the stop is yield-ihgly held in the path of movement of the blank and downward pressure exerted by theforward end of the blank is sufficient to retire the,stop against the yielding holding means so. as-to permit the blank to pass into and under the control of the pressure means, whatever they may be, and I prefer that the rolls that pass the blank to the yielding stop-shall be provided with the means for creaslng the blank to deplace at which the folding will take place.

I am thus enabled,'without stopping the blank in its progress through the machine, and therefore without losing time, to fold its advance-end upon itself. so as to form a protective drinking edge for the finished I cup. The folded flap being very small as compared with the size of the blank, the

mechanism herein described .is: particularly upon this bent end until it has passed backwardly far enough to enable the pressure rolls to gri and pinch it before it can snap back to its original shape, but these hooks may be replaced by some other instrumentality for the purpose.

In accordance with the provisions of the patentstatutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

I claim 1. A machine for folding flat paper drinkcups, including means for blunting the drinking-edge of the cup preparatory to folding side flaps over upon the ends of the said blunted edge whereby the said ends are overlaid and held in place.

2. A machine for folding flat drinking cups including means for feeding a relatively long blank endwise into the machine, means for folding the front end of said blank rearwardly with respect to the direction of travel of said blank to produce a protective fold for the opening in the cup to be formed from said blank, and means for thereafter doubling the blank transversely of its length and thereby reversing the position of the fold on which said protective fold has been formed.

3. A folding machine for producing flat paper drinking cups and including means for blunting the drinking-edges of the cups by folding a portion of each blank upon itself prior to the main folding of the blank.

4. A folding machine for producing flat paper drinking cups and including means for movin the blank to a position for a major folding operation, and means for folding a protective edge on the advancing end of the blank during its passage to said position.

5. A machine for folding blanks in the production of fiat drinking cups, said machine being characterized by having a stop mechanism that temporarily engages with the advance edges of the blanks while the main portions thereoftravel over said edges so as to form a protective fold upon the advance edge of each blank.

6. A machine for folding blanks in the production of flat drinking cups and including feeding and pressure mechanism, said machine being characterized by having a stop mechanism interposed between the feeding and pressure mechanism of the machine, said stop mechanism temporarily engaging with the feed ends of the blanks while the main portions thereof travel over said end so as to form a protective fold upon the vance edge of the blank.

7 In a machine for folding blanks in the production of fiat drinking cups, a yielding stop interposed in the path of travel of blanks through-the machine and operating to temporarily stop the advance edges of the blanks while the adjacent bodyportion of each blank is fed over said edge to form a fold, the force of which blanks retires said stop which thus surrenders the blank to pressure devices, and pressure devices to receive said blanks and complete the fold on each.

8. In a machine for folding blanks in the production of flat drinking cups, feed rolls, a yielding stop interposed in' the path of travel of blanks under the force of said feed rolls and operating to temporarily stop the advance edges of the blanks while the ad jacent body portion of each blank is fed over said edge to form a fold, the force of which blank retires said stop which thus surrenders the blanks to pressure devices, and pressure devices to receive said blanks and complete the fold on each.

9. In a machine forfolding blanks in the production of fiat drinking cups, the combination with feed rolls, of pressure rolls, and a yielding stop interposed between the feed and pressure rolls and operating to temporarily stop the advance edge of a blank while the adjacent body portion thereof 1s fed over the same to form a fold, the tension of which retires said yielding stop which thus surrenders the blank to the action of pressure rolls.

10. In a folding machine for. producing flat drinking cups, the combination with means for feeding blanks, of pressure means, and a yielding blank sto interposed between the said feeding an pressure means and yieldingly engaging with the advance edges of the blanks to stop the same while the forward end adjacent to the main portion of each blank is carried over said end in the form of a fold, after which the stop releases the folded feeding ends of the blanks to the action of said pressure means.

11. In a folding machine for producmg fiat drinking cups, the combination with feed rolls and pressure rolls, of yielding stop members interposed between the said feed and pressure rolls and operating toengage with and stop the advance edge of each blank while the adjacent body portion thereof is carried over said blank in the production of a fold, the same yielding stop operating to release the blanks as soon as they are brought under the control of the pressure rolls.

12. In a folding machine for folding means, of pressure means, and yieldin hooks interposed between said folding an pressure means for engaging with and temthe adjacent body portion of the. blank is fed over said edge to form a fold.

14. In a machine for producing flat drinking cups, the combination of creasing rolls. a yielding stop inter sed in the-path of travel of a blank in t e machine and positioned to engage and stopthe advance edge of the blank while the creasing rolls force the adjacent-body portion of the blank over said edge and fold it on the crease made by said creasing rolls, and means to receive the blank and complete the fold.

15. In a machine for producing flat drinkmg cups, the combination of creasing rolls for creasing a blank on opposite sides, a

. yielding sto mechanism located in the path oftravel o the blank from the creasing rolls for temporarily stopping the. advance edge of the blank to cause it to be folded along the line of a crease near said advance edge, and means to receive the blank from said stop and to complete'the fold ofsaid e ge.

16. A machine for folding a. blankto prou e a a r nk ng up nd. including mechanism for folding one end to provide a protective fold, means for doubling up the blank to produce a major fold in the. bpdyof the up ndm ans -nass ng h blan from said protective folding mechanism, to

he m jo fo ding m a s.

17. A machine for fold-inga blank taprodu a -t drmkln eupand d ng me hn m or first olding one i p vide a Pro e tiv f ld, meande -dou i g p h a k a produces maj r 01d h y sf t e, cup, a meansfor pas ng theblan from. the protective folding means to the majo foldin 1. A maqh'ne icyf ldirs b ank proltea tfliat .drmkmg, WP, and in n ss means. fo e d name and 111 misdirection t0 p edates-Protective old, and means for thereaf er d ubl ng the blank inthopposite. d recti to, f m h dy Porti n of -the cup, said doubling causing a reversalof the position of said folded end from front to rear. v

t9-...-A.mach neqfo r fol ng ablanktor pr duce a fiat dunk ng cup and including me for apply ag an. a hesiv a ne, end of the blank. mearaferdaab ins we said end of the blank to, produce a rotective fold, means fordoubling the blan to produce the body of the cup, thereby changing the position of said doubled end from front to rear, and means for securing the doubledup body part of the cup.

20. A'machine for folding a blank to produce a flat drinking cup and including means for first applying an adhesive to one end of the blank, means for doubling over said end of the blank to produce a protective fold, means for passing the blank to a body folding mechanism, and body folding mechanism for doubling-up the blank to produce the body of the cup.

21. A machine for folding a blank to produce a flat drinking cup and including mechanism for folding one end to provide a protective fold, means for doubllng up the blank to produce the body of the cup, means for folding the doubled-up parts, and means for passing the blank from the protectlve folding mechanism to the doubling-up means 22. A machine for folding a blank to produce a flat drinking cup and mcludmg means for creasing said blank near one end,

means for gumming the blank between the creased part and the end thereof, and means for doubling over the gummed part to provide a protective fold. v

23. A machine for folding a blank toproduce a flat drinking cup and ncluding a pair of creasing members, cotiperative creasing instrumentalities on said members, a gummer on oneof said members contact with theblank before action of said creasing instrumentalities, and folding mechanism located to receive said blank from Said creasing members and fold over the end thereof to provide a protective fold.

24. A folding machine for producing fiat drinking cups and including two members for passing a blank between them, creasing instrumentalities cotiperatively located on said members, a gummer located on one of said members .tocontact with theblank between its end and creased par means for preventing contactof said, gummer Withth surface of the othermember and means for govern n th peramqn id pr re tms means.

25; f ng-magma for prq lrmg fl drinking cups andv ncluding two for a blank between them a gummer on one of said members to contact "with the surface ofthe thermember, means for pre- Venting contact of said gummer wlth the surface of the other member, means for goveming the operation of said preventing means, and means located to receive the blanks from said members. andto fOldzQYQI th summ d pa t pr e. a pr tectiv eld- 26. A folding machine for. pmdllcing flat drinking cups and including two members for passing a blank between them, creasing instrumentalities codperatively located on said members, a gummer located on one of said members to contact with the blank between its end and creased part, means for preventing contact of said gummer with the surface of the other member, means for governing the operation of said preventing means, and means located to receive the blank from said members and to fold over ghe gummed part to provide a protective old.

27. A folding machine for producing fiat drinking cups and including two rolls for passing a blank between them, one of said rolls having a releasing groove, a gummer on the other roll to be received within said groove, means for stopping rotation of the grooved roll in position to receive said gummer passed through said groove, means lo cated in the path of movement of a blank to said rolls for governing the operation of said stopping means, and folding mechanism to receive said blank from said rolls and fold over the end to produce a protective fold.

28. A folding machine for producing flat drinking cups and including a shaft, a roll loosely mounted on the shaft and having a releasing groove, a clutch to connect and disconnect said shaft and roll, a second roll cooperatively mounted with respect to the first roll, a gummer supported on the second roll, clutch operating mechanism, controlling mechanism located in the path of'movement of a blank to said rolls to control the operation of said clutch mechanism, and means for receiving a blank from said rolls and for folding over the gummed portion.

2 A folding machine for producing flat drinking cups and including a shaft, a; roll loosely mounted on the shaft and having a releasing groove, a clutch to connect and disconnect said shaft and roll, a second roll coiiperatively mounted with respect to the first roll, a gummer supported on the second roll, clutch operating mechanism, controlling mechanism including a finger located in the path of movement of a blank to said rolls and operatively connected with the clutch mechanism to operate it, and means for receiving ablank from said rolls and for folding over the gummed portion.

30. A folding machine for producing fiat drinking cups and including a shaft, a roll loosely mounted on said shaft and having a releasing groove, aclutch to connect and disconnect said shaft and roll, a second roll operatively mounted with respect to the first roll, a. gummer supported on the second roll, clutch operating mechanism, controlling mechanism for said clutch, the members of said clutch operating and controlling mechanism being relatively arranged with respect to each other and with respect to a blank passing to the rolls to operate the stop memhere to stop said loosely mounted roll when said releasing groove is opposite the other roll. and means for receiving a blank from said rolls and for folding over the gummed port-1011.

31. A folding machine for producing flat drinking cups and including a shaft. a roll loosely mounted thereon and having a re leasing groove, a clutch to connect and disconnect said roll and shaft, a stop on said roll, a detent to engage said stop, a second roll cooperatively mounted with respect to the first, a controlling finger mounted in the path of movement of a blank to said roll, a connection between said detent and finger. and means for receiving a blank from said rolls and for folding over the edge thereof.

32. A folding machine for producing flat drinking cups and including a shaft, a roll loosely mounted thereon and having a releasing groove. a clutch to connect and disconnect said shaft and roll, a stop on said roll. a detent to act in connection with said stop, a second roll cooperatively mounted with respect to the first roll, a controlling finger mounted in the path of movement of a blank to said rolls. a cam on the first roll to operate said detent. a latch connected with said finger to hold said detent when released bv the cam, and means for receiving a blank from said rolls and for folding over the edge thereof.

33. A folding machine for producing flat-- drinking cups and includin a shaft. :1 roll looselv mounted on the shaft and having :1. releasing groove. a clutch to connect and dis connect said shaft and roll. clutch operating mechanism including a stop mounted on said roll. a detent to engage said stop. an arm connected with said detent. a cam on said shaft to operate said arm. a controlling finger mounted in the path of movement of a blank to said rolls, a latch connected with said finger to engage said arm and hold the detent when released by said cam, a second roll coiiperatively mounted with respect to the first, and means for receiving a blank from said rolls and for folding over the edge thereof.

34. A folding machine for producing fiat drinking cups and including a pair ofrolls. a

folding hook mounted to receive blanks from &

said hook, andmollstc, receive thefold of said deflected edge andcomplpte the folding operation thereof.

36. A folding machine for producing flat drinking cups-and including feed members, means for providing a confining space to receive a blank from said feed members, folding hooks located in said confining space to receive the advancin edge of said blank from said feed 'mem ers, means for operating the hooks to: deflect .the advancing edgeofsaid blank, and means to receive said folded edge and complete the folding operation thereof.

' 3'L-A- folding machine for producing fiat drinking cups and including a pair of rolls, plates located with a sli ht space between them adjacent to said -ro ls, foldin hooks adapted to be located in the space between said plates. to receive the advancing edges of a blank frombetween said rolls, means for-.operatingsaid hooks to deflect the advancing edge of theblank, and rolls to receive. the fold of said-deflected edge and complete the folding .operation thereof.

38. A folding machine for producing fiat drinking cupsand including a pair of rolls, plates located adjacent to said rolls to receive a blank from between them, one of said plates having an opening, a folding hook located in said opening to intercept the.

movement of a blank between said plates, means for operating the hook to deflect the advancing edge of the blank, and rolls to receive the fold of said deflected edge and complete the folding operation thereof.

'39-. A folding machinefor producing flat drinking cups and including a pair of rolls, a pair of plates located adjacent to said rolls and with a slight space between them to receive a blank from said rolls, said plates each. having an opening, a folding hook 'ptedtobe loca ed in the. openings in-said assass n plates to engage the advancing edge of a blank from said rolls, means for operating the hookft o deflectsaid; advancing edge, and

produce a. protective fold, means for thereafter folding the blank to produce the body of the receptacle, and meansfor sticking the protective fold to the body between said folds to secure said protective fold.

41. A machine for folding ablank to pro duce a. flatv drinking cup and including means for creasing the blank toiprovide a protective fold, means for thereafter creasing the-blank to provide a major or body fold, means for folding the blank on the lines of said creases, and means for sticking the-protective fold to the body of the blank between said creases.

4:2. A machine'for folding-a-blank to procharacterized by having creasmg mechanism, presser mechanism, and means located;

between. said mechanisms for producing a protective fold for said cup.

{13. A machine for producing flat paper drlnking cups including means for feeding a relatively long blank endwise into the machine, means for folding the front end of the said blank rearwardly with respect to the direction of travel of the blank to form a protective fold, means for folding the blank transversely of its length whereby its folded forward edge is reversed in position from the frontto the rear of the blank, and means for completing the folding of the blank whereby portions of it are folded upon the ends of the initially formed protective fold. HENRY B. COOLEY.

duce a flatdrinking cup, said machine being 

